Business Combinations - Schedule of Final Allocations of Purchase Price to Assets acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Jul. 11, 2019	Feb. 28, 2019	Feb. 15, 2019
Assets
Goodwill	$ 166,915	$ 163,251
Manitoba Harvest [Member]
Assets
Cash and cash equivalents				$ 5,534
Accounts receivable				6,207
Inventory				15,331
Prepayments and other current assets				1,030
Property and equipment				23,581
Intangible assets				195,966
Goodwill				126,881
Total assets				374,530
Liabilities
Accounts payable				4,973
Accrued expenses and other current liabilities				4,911
Deferred tax liability				54,393
Total liabilities				64,277
Net assets acquired				$ 310,253
Natura Naturals Holdings Inc [Member]
Assets
Cash and cash equivalents					$ 169
Accounts receivable					109
Inventory					3,482
Prepayments and other current assets					166
Property and equipment					17,435
Intangible assets					10,494
Goodwill					29,314
Total assets					61,169
Liabilities
Accounts payable					3,280
Accrued expenses and other current liabilities					876
Deferred tax liability					2,781
Total liabilities					6,937
Net assets acquired					$ 54,232
Smith & Sinclair Ltd. [Member]
Assets
Cash and cash equivalents			$ 137
Accounts receivable			264
Inventory			195
Prepayments and other current assets			125
Property and equipment			138
Intangible assets			2,418
Goodwill			4,932
Total assets			8,209
Liabilities
Accounts payable			220
Accrued expenses and other current liabilities			89
Deferred tax liability			459
Total liabilities			768
Net assets acquired			$ 7,441